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How many cylinders does a hydraulic excavator have at most ?
A hydraulic excavator's operation body has the following three cylinders starting from the bottom; "boom cylinder", "arm cylinder", and "bucket cylinder". Mini types only has one of each, but there is a kind that have two of each, total of six. Also, there is a kind such as a loading shovel that can open and close its bucket with another hydraulic cylinder installed inside the bucket itself.